public class Words
{
   /**
      Computes a string that repeats every letter 't' in the original string.
      @param s any string
      @return a string with the same characters as s, except that every letter 't' is repeated
   */
   public String stutter(String s)
   {
      // your work here
      String result = "";
      for(int i = 0; i < s.length(); i++)
      {
         char a = s.charAt(i);
         String b = a + "";
         if(b.equals("t"))
         {
            result =  result + b + "t";
         }
         else
         {
            result = result + b; 
         }
      }
      return result;
   }
}